<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
</head>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    ::-webkit-scrollbar{
        display: none;
    }
    .back{
        position: relative;
        width: 100vw;
        height: 100vh;
    }
    img{
        position: absolute;
        top: 0;
        width: 100%;
    }
    .time{
        position: absolute;
        top: 8.5vh;
        left: 0;
        right: 0;
        margin: auto;
        text-align: center;
        z-index: 2;
    }
    .time div:nth-of-type(1){
        margin: 0 auto;
        font-size: 37px;
        font-family: PingFangSC-Medium, PingFang SC;
        font-weight: 500;
        color: #334050;
        line-height: 52px;
    }
    .time div:nth-of-type(2){
        margin: 0 auto;
        font-size: 50px;
        font-family: PingFangSC-Semibold, PingFang SC;
        font-weight: 600;
        color: #334050;
        line-height: 54px;
        letter-spacing: 3px;
    }
    .time1{
            position: absolute;
             top: 660.5px;
            left: 30px;
            z-index: 2;
    }
     .time1 div:nth-of-type(1){   
    font-size: 13px;
    font-weight: 500;
    font-family: PingFangSC-Medium, PingFang SC;
    color: #53555a;
    }
</style>
<body>
    <div class="back">
        <div class="time"></div>
        <div class="time1"></div>
        <img src="
" alt="">
    </div>
</body>
<script>
   var time= document.getElementsByClassName('time')[0]
   var time1= document.getElementsByClassName('time1')[0]
   var timed1=new Date()
        var M=timed1.getMonth()+1
        var D=timed1.getDate()
        var num=timed1.getTime()
        const nums=Number(num)-237600000
        const timed2=new Date(nums)
        var M2=timed2.getMonth()+1
        var D2=timed2.getDate()
        var h2=timed2.getDate()
        var m2=timed2.getDate()
 
    changeTime()
    setInterval(()=>{
            changeTime()
    },1000)


   function changeTime(){
        var timedata=new Date()
        var h=timedata.getHours()<10?"0"+timedata.getHours():timedata.getHours()
        var m=timedata.getMinutes()<10?"0"+timedata.getMinutes():timedata.getMinutes()
        var s=timedata.getSeconds()<10?"0"+timedata.getSeconds():timedata.getSeconds()
        var str1=M+"月"+D+"日"
        var str2=h+":"+m+":"+s
        var str3=M2+"月"+D2+"日 "+h2+":"+m2
        time.innerHTML='<div>'+str1+'</div>'+'<div>'+str2+'</div>'
        time1.innerHTML='<div>'+str3+'</div>'
    }
</script>
</html>